Display screen or portion thereof with graphical user interface



FIG. 1 is a front view of a display screen or portion thereof with a graphical user interface showing my new design; and,

FIG. 2 is another front view of a display screen or portion thereof with a graphical user interface showing my new design.

The outer perimeter in broken lines that surrounds the graphical user interface in FIGS. 1 and 2 represents a display screen or portion thereof and forms no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with graphical user interface, as shown and described. 